Receiving arrangement for wireless telegraphy



Nov. 15, 1927.

G. G. VON ARCO RECEIVING ARRANGEMENT FOR WIRELESS TELEGRAPHY Filed April0, 1923 Snoemto'c GEDRG VUN ARCO 951 his Gum/nag q Patented Nov. 15,1927.

a f TfElD- .S TATES nane PATENT orricr.

GRAF GEORG VON ARGO, .OF BERLIN, GERMANY, ASSIGNOR T0 'GESELLSCHAFTDRAHTLOSE'T'ELEGRAPHIE'IVIJIB H. HILLIIESCHES UFER 12/13, BERLIN,GERMANY,

' A CEIRPORATION or GERMANY.

RECEIVING ARRANGEMENT FOB WIRELESS 'TEL'EGBAPHY.

Application-filed April 30,1923, Serial No. 635,409, and in Germany May9. 1922.

Receiving arrangements for wireless com- ;mnnic-ation are known whichconsistofsin- :gle antenna located for apart and acting .uponia-commonreceiver which is usually ar- =ranged.mid\vay of-the-antennze. Onaccountof the distance between the antennae, they'are excited by the incomingWave in different current ,phases. The antennae are then coupled to thecommon receiver insuch -a way that the different current phases areadded together. The regulation of these arrangements .toobtain the rightcurrent phase generally produces a coupling reaction and simultaneouslya detuning.

The object of the invention relatesto the provision of a one-Waycoupling such that a deleterious reaction is practically impossible.This offers the further advantage that the. receiving apparatus is notsupplied the antennae separately, but theantennze are brought into acascade arrangement, so that one of the antennae receives =.the totalenergy, and the receiver is connected to such antenna only.

According to the invention, several an tenure of any kind, butpreferablydirective antennae, for example, frame'or loop antennae,areused.. Every frame or. loop connectedin theusual Way toa Yverticalcomponent may also have .a one-sided cardioid field curve. 7 I

The single figure of the drawing represents aniari'angement according tothe invention. 7 @nly those parts are, illustrated. which are necessaryfor the description of the invention. Therefore, the anode and heating 1batteries required for the amplifiers are omitted. V

1, 2 and 3 are frame antennae which are arranged in :the direction of ithe arrow, that is, in the direction of the incoming electric waves, .4:and 5 are radio frequency amplifiers, and. 6 isannudion valve. 8 and!)are tuned intermediate loop circuitsiand 10 a telephone. The energy istransferred from the frame l -to .theframe 2 by the radio frequencyamplifier tube 4, and the intermediate circuit 7. By using the tube 4 asa radio frequency amplifier, a one-sided coupling in the sense of. theWave train is given. The phase of the energy Which is supplied to theframe 2 from the frame 1 and to the frame 3 from the frame 2 isregulated in such a Way that the phase-angle is identical with thatwhich is produced by the direct action. of the wave on the frameantennae J2 and 3. The frames 1,2, and3 are connected by the anode andcathode Wires of-the valves,

and :as .these connections contain the very high ohmic resistance of thevalve itself, copper connecting land Wires of very small sectional areamaybe used. The Wires may even he shunted by resistances ll, 12. at oneor more places in order to prevent atmosiheric or other localdisturbances. r

r'i-t the :end of the anode-cathode circuit ofthe tube 4, the closedoscillatory circuit .7

is attached, by the adjust-mentand coupling of which the current istransferred to the antenna 2in the right phase, and from there the'=energy is supplied by the radio frequency amplifier 5 over theintermediate circuit -8 to the frame antenna 3. The total receivingenergy is then Withdrawn from the last antenna 3 and conducted over theintermediate circuit 9 and the amplifying arrangement including theaudion tube :6 to the :telephone 10.

The Whole arrangementconstitutes a res ceiving systemwhich in the mainis of the one-sidedor cardioid type.

As the energy is onlyadded together for the special phase displacement,this arrangement is little influenced 'by a shock e-X- citation such asis caused by an atmospheric disturbance.

Having described my invention, What .I claim is:

'1. A circuit arrangement comprising a plurality of directive antennaespaced from each other in the direction of propagation of the Wave whichit is desired to receive and amplifiers for supplying energy from onetoanother of the. antennae in cascadesarrangement.

. 2. A radio receiving apparatus cfom-pris ing a plurality of-directiveantennae spaced from each other, and vacuum tube amplifiers for couplingthe antennas together so as-to supply energy frompreceding to succeedingantennae in cascade arrangement.

3. A radio receiving apparatus comprising a plurality of loop antennaespaced-from each other in the general direction of propagation of theWave which it is desired to receive and by a distance suited to thelength of the Wave, and means for transmitting energy from one of theantennae to another at ergy from the first antenna to be supplied to thesecond antenna at the same phase as the energy from space.

5. A radio receiving apparatus comprising a number'of loop antennaegreater than two spaced from each other in substantial alignment in theplanes of the antennae and received in the second antenna providedwithcondensers and means for supplying energyzin cascade relation frompreceding to succeeding antennae, said'means comprising vacuum tubeamplifiers having tuned circuits coupled to toe succeeding antennae andarranged in the output circuits of the amplifiers, and said amplifiershavin -their input circuits connected to the prece ing antennae atopposite vsides of said condensers'.

6. In combination, a source of radiant energy, a plurality of receivingantennae spaced from each other and substantially in linewith'said'source, each antenna being ca pable of receiving energy fromsaid source, and land conductor and amplifying means associatedtherewith for transferring received energy from one antenna to a secondantenna, and signal responsive means associated with said secondantenna.

7 In comblnation, a source of radiant energy, a plurality'of receiv ngdirective antennae spaced from each other and substantially in line withsaidsource, each antenna being capable of receiving energy from saidsource, and land conductor and amplifying means associated therewith fortransferring received energy from one antenna to a second antenna, andsignalresponsive means associated with said second antenna.

8. A circuit arrangement comprising a plurality of antennae spaced fromeach'other in the direction of propagation of the Wave which it isdesired to-receive, means for connecting said antennas in cascade, and

means intermediate the antennae for amplifying the energy delivered byone antenna to the next antenna of the cascade.

11. A" circuit arrangement comprising i more than two antennae spacedfrom each other in the'direction of propagation of the wave which it isdesired to receive, means for connecting'said antennae in cascade, andone-way 'coupling'means for supplying energy from one to another ofthe'antennae of i the cascade.

" 12. A circuit arrangement comprising more than two antennae spacedfrom each other and connected in cascade, and one-Way 7 coupling meansfor supplying energy from one to another of the antennae of the cascade.

13. A' circuit arrangement comprising more than two antennae connectedin cascade, and one-way coupling neans for supplying energy from one toanother, ofthe antennae of the cascade. I Q

14. In combination, more than two receiving loop antennae spaced apartand located substantially in the same plane, means for transferringenergy from oneantenna to a second antenna in cascade arrangementthereto, and signal responsive means associated with saidsecond antenna.

15. A radio receiving apparatus comprising a plurality of antennaespaced from each other in substantial alignment in the planes of theantennae, and means for transmitting energy received in one of theant'ennae'to another of the antennae, said means comprising a vacuumtube amplifier having a loop circuit coupled to the second antenna andconstructed to. enable the amplified energy from the first ant'ennato besupplied tothe second antenna at thesame phase as the energyreceived inthesecond'antenna from space. i 3 I 16. A circuit arrangementcomprisingaplurality of antennae spaced from each other, and land conductor andamplifying means associated'with said antennae, said means b eingadapted to'impress on the second antenna from the first antenna anamplifiedsignal in phase with the signal pickedup by the said secondantenna; W

GRAF enone ON no'o. 1

